RESEARCH OF THE INFLUENCE OF COATING/ADDITIONAL MATERIAL SELECTION ON THE QUALITY OF THERMAL SPRAYED LAYER

Tema ovog rada je „Istraživanje utjecaja izbora prevlake/dodatnog materijala na kvalitetu naštrcanog sloja“. Rad je podijeljen na teorijski i eksperimentalni dio. U teorijskom dijelu rada opisan je postupak toplinskog naštrcavanja te vrste toplinskog naštrcavanje kao i prednosti i nedostaci. Detaljnije su opisani materijali koji se koriste za toplinsko naštrcavanje, kao i priprema površine i nastajanje slojeva te područja primjene naštrcanih slojeva. U eksperimentalnom dijelu provedena su ispitivanja na dva uzorka s različitim prevlakama AISI 431 i Metco 350NS, a u kojem su ispitane tvrdoće, mikrostrukture i kemijski sastav navedenih prevlaka.The theme of this final paper is the „Research of the influence of coating/additional material selection on the quality of thermal sprayed layer“. The paper is divided into theoretical and experimental part. The theoretical part of the paper describes the procedure of thermal spraying process, types of thermal spraying process and advantages and disadvantages of the process. Materials used for thermal spraying, as well as surface preparation and formation of layers and application of sprayed layers are described in more detail. In the experimental part, two samples were tested with different coatings AISI 431 and Metco 350NS, in which the hardness, microstructure and chemical composition of the mentioned coatings were examined